Photographic camera



Feb. 25, 1936. H. KUPPENBENDER 2,032,060

PHOTOGRAPHIC CAMERA Filed Sept 19, 1934 2 Sheets-Sheet .1

Feb. 25, 1936. H. KUPPENBENDER 2,032,060

PHOTOGRAPHIC CAMERA Filed Sept. 19, 1954 2 Sheets-Sheet 2 Patented Feb.25, 1936 UNITED STATES PATENT OFFICE Application September 19, 1931,Serial No. 744,623 In Germany September 22, 1933 9 Claims.

This invention relates to improvements in photographic andcinematographic cameras in which the regulailon oi the objective iseffected simultaneously with the adjustment 0! a distancemeter of thehome base type, especially of that kind using optical means separatedfrom the base-line for deflecting the measuring light rays.

In the known apparatus of that type the arrangement iorming thebase-line is fixed to the camera-body while the ray deflecting member iscoupled with the objective carrier.

Now it has come into fashion to use several objectives of diilerentfocal length for the same camera. It is, thereiore, necessary to changethe distance meter or at least the distance-scale together with theobjectives. This change is of course oiten forgotten by the operator,whereby a lot of material, time and labor is wasted.

It is the object of the present invention to obviate this disadvantageby providing each objective with a device for deflecting the measuringrays commensurate with the focal length 01 the objective and attachedfirmly to the lens support so that it must be changed together with theobjective.

The construction or the deflecting device must be so calculated, thatthe ioeusslng oi the objective is eiiected simultaneously with theadjustment of the distance-meter.

The present invention will be best understood by the ioilowingdescription and the annexed drawings. v

In the accompanying drawings:

Fig. 1 is a top view cl 9. camera with a distance-meter operatedobjective according to my invention, the distance-meter parts beingshown in cross-section.

Fig. 2 is a iront view thereof.

Fig. 3 is a side view of s camera according to the invention, severalparts of which being broken away for illustrating better the inventiveidea.

Fig. 4 is a side view of an objective sccordins to my invention, severalparts also being broken away tor the sake of better understanding.

Fig. 0 is a treat view or a cross-section icliowing line A-B oi theobjective mounting, shown in Fill. 4.

Fig. 6 is a side view of the objective, same as Fig. 4, and illustratesthe rotability or. the tocussina mounting. and

-l ig. 'I shows a 'nodiiied embodiment oi the invention.

As illustrated. the camera I in the form 0! a cinematographic camera oithe srring motor driven type carries the lens tube 2 and thedistance-meter 3. This distance-mete: consists of two parts separatedfrom one another.

The part 30 iorming the base is fastened to the camera-body and consistsof a box-like casng containing two mirrors or total reflecting prismsfor collecting the rays coming from the object to be photographed. Intheembodiment shown in Fig. 1 the casing has two outlooks 30l and 302 infront and a peephoie 303 in the back. Two prisms 304 and 305 arepositioned inside the casing in such manner that the rays entering theopening 302 are reflected twice by the prismatic body- 304 to theoperator's eye. The rays entering the opening l first pass prism 305,further prism 304 and also reach the operator's cye. For bettercombining both pictures, the contacting plane 308 of the pr.sms 304 and306 is halI-silvered.

The part ii of the distance-meter forms the ray deflecting device andconsists, in the embodiment shown in Figs. 1 and 4, of two glass wedges3|0 and III arranged in a box-like casing so as to be rotatable counterone another and in relation'to the objective position. For this purposethe objective-iocussing mounting 2| carries a gear 2! I meshing with agear 2 I2 in turn engaging the gear Ill on the mounting which carriestne glass wedge H0. The gear II I meshes also with a gear-2i! whichengages the gear 2i! and the latter meshes aith a gear 3I3- on themounting o! the glass wedge II I. Tne iocussing mounting 2a is rotatablymounted in a'sieeve 22 and is connected by a pin b with an adjustingring a provided with a screw thread. by which in known manner, therotating movement of the adjusting rings is changed into a to-and-iromovement 0! the objective itself. The pin b extends through acircumferential slot c in said sleeve 22 to permit this rotation oi themounting II by the adjusting ring a.

By the preceding description, it will be apparent that. on rotating theobjective mounting, the glass wedges H0 and III will be rotated inopposite directions and upon such rotation being eiiected. the measuringray experiences a deflection in one direction only. because on accountoi the oppositely directed rotation of the wedges, the deflectionperpendicular to that said direction is eliminated.

Fig. '7 shows a 'modiiled embodiment oi the inventlcn, in which twomirrors Ill and ii! are used in place of the two prisms 8N and 305. Themirror IIO is densely silvered so that the rays entering the opening 802are directly reflected to the mirror 0 which is only slightly silveredcamera body in any known manner.

to be semi-transparent. The mirror 3 reflects the rays coming from themirror 3l5 into the opening 303 and into the eye of the observer, andowing to the transparency of the mirror 3 it is also penetrated by raysentering the opening 3M and leaving the opening 303-.

As already mentioned, the measuring ray deflecting device must be soconstructed that, by looking through the peephole of the base, theoperator hw nothing to do but to bring both pictures seen in thetelemeter in superposition by turning the fccussing mounting, wherebythe object to be photographed is focussed at the same time. This can beeffected by suitably choosing the angle of the glass wedges or the rateof the gears or the pitch of the screw thread or ray deflecting devicewill be automatically changed.

The objective mounting may be fastened to the In the embodiment shown inFigs. 3 and 4, the sleeve 22 of the objective mounting fits snugly intothe tubelike opening I! of the camera front wall and is fastened by pin23 entering slot [3, when turning the lens mounting.

As already mentioned, the base-casing may be flxedly attached to thecamera body. Or, for sake of convenience, it may be rotatably attachedto the camera body in such a manner, that it may be swung away. if itwill not be in use.

As is shown in Figs. 2 and 3, the base-casing 30 may be fastened to anannular member 33 rotatably fixed to the lens supporting ring I! of thecamera body, so that it may be swung down to the position shown in Fig.2 in dotted lines.

It will be understood, that in the foregoing description the inventiveidea is only shown in one preferred embodiment and that I do not like tobe limited to the shown example, all changes in its general arrangementfalling within the scope of the annexed claims. I

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. A camera. an objective moimting detachably fastened to it and atelemeter of the home-base type consisting of' the ray collecting deviceseparated from the ray deflecting device, said my collecting devicebeing attachedto the camera body and said ray deflecting device beingattached to the objective mounting.

2. A camera, an objective mounting detachably fastened to it and atelemeter of the home-base type consisting of the ray collecting deviceseparated from the ray, deflecting device, said ray collecting deviceconsisting of two prisms rigidly mounted in a case attached to thecamera body, and said ray deflecting device being attached to the camerabody.

3. A camera, an objective mounting detachably fastened to it and atelemeter of the home base type consisting of the ray collecting deviceseparated from the ray deflecting device, said my collecting devicebeing attached to the camera body, and said ray deflecting deviceconsisting of two glass wedges rotatable counter one another and beingturned by the lens mounting, said my deflecting device being attached tothe objective mounting.

4. A camera, an objective mounting detachably fastened to it and atelemeter of the home base type consisting oi the ray collecting deviceseparated from the ray deflecting device, said ray coiiccting deviceconsisting of two prisms rigidly mounted in a case attached to thecamera body. and said ray deflecting device consisting of two glasswedges rotatable counter one another and being turned by the lensmounting, and being attached to the objective mounting.

5. A camera, an objective mounting detachably fastened to it and atelemeter of the home base type consisting of the ray collecting deviceseparated from the ray deflecting device, said ray collecting deviceconsisting of a prism of rhombil cal shape and a second prism fixed toit, both prisms rigidly mounted in a case attached to the camera body,and said ray deflecting device being attached to the objective mounting.

6. A camera, an objective mounting detachably fastened to it and atelemeter of the home base type consisting of the ray collecting baseseparated from the ray deflecting device, said ray collecting baseconsisting of a prism of rhombical shape and a second prism fixed to it,both prisms being attached to the objective mounting.

'7. A camera, an objective mounting detacha bly fastened to it and atelemeter of the home base type consisting of the ray collecting deviceseparated from the ray deflecting device, said ray collecting devicebeing turnably attached to the camera body, and said ray deflectingdevice being attached to the objective mounting.

8. A camera, an objective mounting detachably fastened to it and atelemeter of the home-base type consisting of theray collecting deviceseparated from the ray deflecting device, said ray collecting deviceconsisting of two mirrors rigidly mounted in a case attached to thecamera body.

9. A camera, an objective mounting detachably fastened to it and atelemeter of the home base type consisting of the ray collecting deviceseparated from the ray deflecting device, said ray collecting deviceconsisting of two. mirrors rigidly mounted in a case attached to thecamera body, and said ray deflecting device consisting of two glasswedges rotatable counter one another andbeing attached to the objectivemounting.

rmmz KUPPENBENDER.

Certificate of Correction Patent No. 2,032,060. 4 February 25, 1936. I

HEINZ KU'PPENBENDER It is hereby certified that error appears in theprinted specification of the abovenumbered patent requiring correctionas follows: Page 2, first column, line 64, claim-2, for camera body readobjective mounting; and that the said Letters Patent should be read withthis correction therein that the same may conform to the record of thecase in the Patent Office.

Signed and sealed this 13th day of July, A. D. 1937.

[SEAL] HENRY VAN ARSDALE, Acting Commissioner of Patems.

fie; tifieete Patent N0. 2,032,060. 4 7 February 25, 1936.

- HEINZ KUPPENBENDER It is hereby certified that error appears in theprinted specification of the above numbered, patent reqmnng poryectionas follows: Page 2, first column, line 64, claim-2, for camel a bodyread qbyectwe mounting; and that the said Letters Patent should be readwlth this cerreetlon therein that the same may conform to the record ofthe case 11 the Petent fiee.

Signed. and sealed tale 13th day of July, A. D. 1937.

EsEALj HENRY "TAN Acting Commissioner of Patents.

